Footwear sole



FIG. 1 is a rear perspective view of the footwear sole;

FIG. 2 is a side view thereof;

FIG. 3 is a first close up side view thereof; and,

FIG. 4 is a second close up side view thereof.

Features shown in broken lines do not form any part of the claimed design. Any broken lines immediately adjacent the solid-line portions of the design form the boundary of the design, with the broken lines forming no part of the claimed design. 

CLAIM The ornamental design for a footwear sole, as shown and described. 